47m MPYD motoryacht

For this 47m motoryacht design by Michael Peters, we were asked to carry out a hull optimisation study, focussing at the bulbous bow in particular. Using the Friendship Framework, coupled with Friendshow Flow, over 6000 different bulb designs were rapidly verified. After pin-pointing the trends in the resistance variation, an optimum bulb design was identified. This bulb design was then further analysed in our CFD RANSE code ISIS CFD.

Eventually, a resistance saving of 8% was found, due to local changes in the bulb geometry only!